Acid Black 232

4-(4-Aminophenyl)benzenamine double nitriding, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, aniline diazo, in alkaline conditions and the above the products of coupling, and 3-(Diethylamino)phenol?coupling.

black. Mainly used for the polyamide fiber dyeing and printing

Standard(Polyamide)	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	3-4	4	4-5	4			4-5	4-5